Footwear Having Coverable Motorized Adjustment System

ABSTRACT

An article of footwear may include a motorized tensioning system including a tensile member and a motorized tightening device attached to an outer surface of the article of footwear, the tightening device configured to apply tension in the tensile member to adjust the size of an internal void defined by the article of footwear. The article of footwear may also include a tightening device cover configured to be removably attached to the article of footwear over the tightening device.

BACKGROUND

The present embodiments relate generally to articles of footwear andincluding coverable motorized adjustment systems.

Articles of footwear generally include two primary elements: an upperand a sole structure. The upper is often formed from a plurality ofmaterial elements (e.g., textiles, polymer sheet layers, foam layers,leather, synthetic leather) that are stitched or adhesively bondedtogether to form a void on the interior of the footwear for comfortablyand securely receiving a foot. More particularly, the upper forms astructure that extends over instep and toe areas of the foot, alongmedial and lateral sides of the foot, and around a heel area of thefoot. The upper may also incorporate a lacing system to adjust the fitof the footwear, as well as permitting entry and removal of the footfrom the void within the upper.

In some cases, the lacing system may include a motorized tensioningsystem. Components of a motorized tensioning system may include, forexample, a motorized tightening device, a control board, and a battery.Each of these components may be incorporated into an article of footwearin various places. In some cases, these components may be mounted on anouter portion of the footwear upper. In such configurations, it may bedesirable to celebrate the inclusion of these components on the footwearwhile concealing their outward appearance and protecting thesecomponents from damage.

SUMMARY

In some embodiments, the disclosed footwear may include individualcovers configured to cover lace tensioning system components on theouter surface of the footwear upper. Such covers may include facetedsurfaces configured to define a contoured cavity enclosing thetensioning system components.

In one aspect, the present disclosure is directed to an article offootwear, including a motorized tensioning system including a tensilemember and a motorized tightening device attached to an outer surface ofthe article of footwear, the tightening device configured to applytension in the tensile member to adjust the size of an internal voiddefined by the article of footwear. The article of footwear may alsoinclude a tightening device cover configured to be removably attached tothe article of footwear over the tightening device.

In another aspect, the present disclosure is directed to a motorizedfootwear lacing system. The system may include an article of footwearhaving a motorized tensioning system including a tensile member and amotorized tightening device attached to an outer surface of the articleof footwear, the tightening device configured to apply tension in thetensile member to adjust the size of an internal void defined by thearticle of footwear. The system may also include a control unit and apower source incorporated into the motorized tensioning system, thecontrol unit and the power source being attached to an outer surface ofthe article of footwear. Further, the system may include a first set ofcomponent covers configured to be removably attached to the outersurface of the article of footwear, the first set of component coversincluding a first tightening device cover configured to be removablyattached over the tightening device, a first control unit coverconfigured to be removably attached over the control unit, and a firstpower source cover configured to be removably attached over the powersource. In addition, the system may include a second set of componentcovers configured to be removably attached to the outer surface of thearticle of footwear, the second set of component covers including asecond tightening device cover configured to be removably attached overthe tightening device, a second control unit cover configured to beremovably attached over the control unit, and a second power sourcecover configured to be removably attached over the power source. Also,the first tightening device cover may be interchangeable with the secondtightening device cover, the first control unit cover is interchangeablewith the second control unit cover, and the first power source cover maybe interchangeable with the second power source cover.

In another aspect, the present disclosure is directed to a method ofchanging a lacing system of an article of footwear. The method mayinclude providing an article of footwear including a motorizedtensioning system attached to the article of footwear, the motorizedtensioning system including a tensile member laced through eye stays ina lacing region of the article of footwear, a motorized tighteningdevice configured to apply tension in the tensile member to adjust thesize of an internal void defined by the article of footwear, a firsttightening device cover removably attached to the article of footwearover the tightening device, and a second tightening device coverconfigured to be removably attached to the article of footwear, thesecond tightening device cover having a different exterior shape thanthe first tightening device cover. The method may also include removingthe first tightening device cover from the article of footwear andremovably attaching the second tightening device cover to the article offootwear over the tightening device.

Other systems, methods, features and advantages of the embodiments willbe, or will become, apparent to one of ordinary skill in the art uponexamination of the following figures and detailed description. It isintended that all such additional systems, methods, features andadvantages be included within this description and this summary, bewithin the scope of the embodiments, and be protected by the followingclaims.

BRIEF DESCRIPTION OF THE DRAWINGS

The embodiments can be better understood with reference to the followingdrawings and description. The drawings are schematic and, accordingly,the components in the figures are not necessarily to scale, emphasisinstead being placed upon illustrating the principles of the invention.Moreover, in the figures, like reference numerals designatecorresponding parts throughout the different views.

FIG. 1 is a schematic illustration of an exploded, rear perspective viewof an article of footwear including a motorized tensioning system andindividual covers for the components of the tensioning system.

FIG. 2 is a schematic illustration of an exploded, side perspective viewof an article of footwear and a power source cover.

FIG. 3 is a perspective, assembled view of the article of footwear andpower source cover shown in FIG. 2.

FIG. 4 is a schematic illustration of an exploded, rear view of anarticle of footwear and a tightening device cover.

FIG. 5 is an assembled view of the article of footwear and tighteningdevice cover shown in FIG. 4.

FIG. 6 is a schematic illustration of a side perspective view of anarticle of footwear and a control unit cover.

FIG. 7 is an assembled view of the article of footwear and control unitcover shown in FIG. 6.

FIG. 8 is a top view of the article of footwear shown in FIG. 7.

FIG. 9 is a schematic illustration of an article of footwear with a lacetensioning system and a remote device for controlling the tensioningsystem.

FIG. 10 is a schematic illustration of an exploded, rear perspectiveview of an article of footwear including a motorized tensioning systemand individual covers for the components of the tensioning system.

FIG. 11 is a schematic illustration of a rear view and partialcross-sectional view of the article of footwear shown in FIG. 10.

FIG. 12 is a schematic illustration of motorized lacing system includinginterchangeable component covers.

DETAILED DESCRIPTION

To assist and clarify the subsequent description of various embodiments,various terms are defined herein. Unless otherwise indicated, thefollowing definitions apply throughout this specification (including theclaims). For consistency and convenience, directional adjectives areemployed throughout this detailed description corresponding to theillustrated embodiments.

The term “longitudinal,” as used throughout this detailed descriptionand in the claims, refers to a direction extending a length of acomponent. For example, a longitudinal direction of an article offootwear extends from a forefoot region to a heel region of the articleof footwear. The term “forward” is used to refer to the generaldirection in which the toes of a foot point, and the term “rearward” isused to refer to the opposite direction, i.e., the direction in whichthe heel of the foot is facing.

The term “lateral direction,” as used throughout this detaileddescription and in the claims, refers to a side-to-side directionextending a width of a component. In other words, the lateral directionmay extend between a medial side and a lateral side of an article offootwear, with the lateral side of the article of footwear being thesurface that faces away from the other foot, and the medial side beingthe surface that faces toward the other foot.

The term “side,” as used in this specification and in the claims, refersto any portion of a component facing generally in a lateral, medial,forward, or rearward direction, as opposed to an upward or downwarddirection.

The term “vertical,” as used throughout this detailed description and inthe claims, refers to a direction generally perpendicular to both thelateral and longitudinal directions. For example, in cases where a soleis planted flat on a ground surface, the vertical direction may extendfrom the ground surface upward. It will be understood that each of thesedirectional adjectives may be applied to individual components of asole. The term “upward” refers to the vertical direction heading awayfrom a ground surface, while the term “downward” refers to the verticaldirection heading towards the ground surface. Similarly, the terms“top,” “upper,” and other similar terms refer to the portion of anobject substantially furthest from the ground in a vertical direction,and the terms “bottom,” “lower,” and other similar terms refer to theportion of an object substantially closest to the ground in a verticaldirection.

The “interior” of a shoe refers to space that is occupied by a wearer'sfoot when the shoe is worn. The “inner side” of a panel or other shoeelement refers to the face of that panel or element that is (or will be)oriented toward the shoe interior in a completed shoe. The “outer side”or “exterior” of an element refers to the face of that element that is(or will be) oriented away from the shoe interior in the completed shoe.In some cases, the inner side of an element may have other elementsbetween that inner side and the interior in the completed shoe.Similarly, an outer side of an element may have other elements betweenthat outer side and the space external to the completed shoe. Further,the terms “inward” and “inwardly” shall refer to the direction towardthe interior of the shoe, and the terms “outward” and “outwardly” shallrefer to the direction toward the exterior of the shoe.

For purposes of this disclosure, the foregoing directional terms, whenused in reference to an article of footwear, shall refer to the articleof footwear when sitting in an upright position, with the sole facinggroundward, that is, as it would be positioned when worn by a wearerstanding on a substantially level surface.

In addition, for purposes of this disclosure, the term “fixedlyattached” shall refer to two components joined in a manner such that thecomponents may not be readily separated (for example, without destroyingone or both of the components). Exemplary modalities of fixed attachmentmay include joining with permanent adhesive, rivets, stitches, nails,staples, welding or other thermal bonding, or other joining techniques.In addition, two components may be “fixedly attached” by virtue of beingintegrally formed, for example, in a molding process.

For purposes of this disclosure, the term “removably attached” shallrefer to the joining of two components in a manner such that the twocomponents are secured together, but may be readily detached from oneanother. Examples of removable attachment mechanisms may include hookand loop fasteners, friction fit connections, interference fitconnections, threaded connectors, cam-locking connectors, and other suchreadily detachable connectors.

A motorized footwear lacing system may include an article of footwearand a motorized tensioning system. The motorized tensioning system mayinclude a tensile member and a motorized tightening device. In someembodiments, the lacing system may be provided as a kit of parts,including a container in which a pair of footwear, a pair of motorizedtensioning systems, and a remote device may be provided. The tensilemember may include a cord or other lace-like member that attaches to themotorized tightening device. In some embodiments, the cord may be lacedthrough lace receiving members in a lacing region of the article offootwear. In some embodiments, the footwear may include one or moreremovable covers configured to be removably attached to the upper of thearticle of footwear over the components of the tensioning system.

The motorized tensioning system enables relatively rapid tightening ofthe footwear. In addition, in some embodiments the tightening system mayprovide incremental tightening. Such incremental tightening may enablethe user to achieve a predictable tightness for each wearing. In someembodiments, sensors may be included to monitor tightness. In suchembodiments, the user may also achieve a predictable tightness.

In some cases, using a motorized tightening device may remove dexterityissues that may occur with other tensioning technologies (pullingstraps, Velcro, and other such manual closure systems). Such a designcould improve the use of footwear for physically impaired or injuredindividuals who may otherwise have a hard time putting on and adjustingtheir footwear. Using the designs proposed here, footwear could betightened via a push button or remote interface.

In some embodiments, the tensioning system may be remotely controlled,for example by a bracelet or hand-held device, such as a mobile phone.In such embodiments, adjustments may be made without the wearer havingto stop the activity in which they are participating. For example, adistance runner may adjust the tightness of their footwear withoutinterrupting their workout or competitive event to bend over and adjusttheir footwear manually or by pressing buttons on the footwear toactivate the motorized tensioning system.

In addition, the tensioning system may also be configured to makeautomatic adjustments. For example, using tightness sensors, the systemmay be configured to maintain tightness during wear by adjustingtightness according to changes in the fit. For example, as feet swellduring wear, the tensioning system may release tension on the tensilemember, in order to maintain the initially selected tightness.

Further, the tensioning system may be configured to adjust the tightnessduring use to improve performance. For example, as a wearer places loadson the footwear during an athletic activity, the system may tighten orloosen the tensile members to achieve desired performancecharacteristics. For example, as a runner proceeds around a curve, thetensioning system may tighten the footwear in order to provideadditional stability and maintain the foot in a centralized positionwithin the footwear. As another example, when a runner is runningdownhill, the tightening system may loosen the footwear to limitadditional forces exerted on the foot as the foot tends to slide towardthe front of the footwear during the downhill run. Numerous otherautomated adjustments may be utilized for performance. Such automatedadjustments may vary for each activity. In addition, the type and amountof such adjustments may be preselected by the user. For instance, usingthe examples above, the user may select whether to tighten or loosen thefootwear while proceeding around a curve. In addition, the user mayselect whether to utilize an automated adjustment at all during certainconditions. For example, the user may choose to implement the adjustmentwhile proceeding around curves, but may opt not to utilize an adjustmentwhen running downhill.

FIG. 1 shows a motorized footwear lacing system 100. As shown in FIG. 1,system 100 may include an article of footwear 105. FIG. 1 shows apartial rear perspective view of footwear 105, the forefoot portion ofwhich has been truncated for purposes of illustration. Footwear 105 maybe any of a variety of footwear types, including athletic footwear, suchas running shoes, basketball shoes, soccer shoes, cross-training shoes,baseball shoes, football shoes, and golf shoes, for example. In otherembodiments, footwear 105 may be another type of footwear including, butnot limited to, hiking boots, casual footwear, such as dress shoes, aswell as any other kinds of footwear. Accordingly, the disclosed conceptsmay be applicable to a wide variety of footwear types.

As shown in FIG. 1, footwear 105 may include an upper 110 and a solestructure 115 secured to upper 110. Upper 110 may include one or morematerial elements (for example, meshes, textiles, foam, leather, andsynthetic leather), which may be joined to define an interior void 135configured to receive a foot of a wearer. The material elements may beselected and arranged to selectively impart properties such as lightweight, durability, air-permeability, wear-resistance, flexibility, andcomfort. Upper 110 may define a throat opening 140 through which a footof a wearer may be received into void 135.

Sole structure 115 may be fixedly attached to upper 110 (for example,with adhesive, stitching, welding, or other suitable techniques) and mayhave a configuration that extends between upper 110 and the ground. Solestructure 115 may include provisions for attenuating ground reactionforces (that is, cushioning and stabilizing the foot during vertical andhorizontal loading). In addition, sole structure 115 may be configuredto provide traction, impart stability, and control or limit various footmotions, such as pronation, supination, or other motions.

The configuration of sole structure 115 may vary significantly accordingto one or more types of ground surfaces on which sole structure 115 maybe used. For example, the disclosed concepts may be applicable tofootwear configured for use on any of a variety of surfaces, includingindoor surfaces or outdoor surfaces. The configuration of sole structure115 may vary based on the properties and conditions of the surfaces onwhich footwear 105 is anticipated to be used. For example, solestructure 115 may vary depending on whether the surface is harder orsofter. In addition, sole structure 115 may be tailored for use in wetor dry conditions.

Upper 110 may also form a lacing region 130. In some embodiments, lacingregion 130 may be disposed in an instep region of footwear 105, as shownin FIG. 1. In other embodiments, the lacing region may be disposed onother portions of the footwear, such as the medial and/or lateral sidesof the footwear. As further shown in FIG. 1, footwear 105 may include aplurality of lace receiving members 125 in lacing region 130. Lacereceiving members 125 may be configured to receive a lace or tensilemember for adjusting the fit of footwear 105.

The arrangement of lace receiving members 125 in this embodiment is onlyintended to be exemplary and it will be understood that otherembodiments are not limited to a particular configuration for lacereceiving members 125. Furthermore, the particular types of lacereceiving members 125 illustrated in the embodiments are also exemplaryand other embodiments may incorporate any other kinds of lace receivingmembers or similar lacing provisions. In some other embodiments, forexample, footwear 105 may include traditional eyelets. Some examples oflace guiding provisions that may be incorporated into the embodimentsare disclosed in Cotterman et al., U.S. Patent Application PublicationNumber 2012/0000091, published Jan. 5, 2012 and entitled “Lace Guide,”the disclosure of which is incorporated herein by reference in itsentirety. Additional examples are disclosed in Goodman et al., U.S.Patent Application Publication Number 2011/0266384, published Nov. 3,2011 and entitled “Reel Based Lacing System” (the “Reel Based LacingApplication”), the disclosure of which is incorporated herein byreference in its entirety. Still additional examples of lace receivingmembers are disclosed in Kerns et al., U.S. Patent ApplicationPublication Number 2011/0225843, published Sep. 22, 2011 and entitled“Guides For Lacing Systems,” the disclosure of which is incorporatedherein by reference in its entirety.

Footwear 105 may also be configured with a motorized tensioning system145. Tensioning system 145 may comprise various components and systemsfor adjusting the size of opening 140 and thereby tightening (orloosening) upper 110 around a wearer's foot. In some embodiments,tensioning system 145 may comprise a tensile member 120 and a motorizedtightening device 150 configured to apply tension in tensile member 120.In some embodiments, tightening device 150 may be attached to an outersurface of footwear 105. For example, as shown in FIG. 1, in someembodiments, tightening device 150 may be attached to an outer surface111 of upper 110.

Tightening device 150 may be configured to apply tension in tensilemember 120 to adjust the size of internal void 135 defined by footwear105. In some embodiments, tightening device 150 may include provisionsfor winding and unwinding portions of tensile member 120. Tighteningdevice may include a motor. In some embodiments, the motor may be anelectric motor. However, in other embodiments, the motor could compriseany kind of non-electric motor known in the art. Examples of differentmotors that can be used include, but are not limited to: DC motors (suchas permanent-magnet motors, brushed DC motors, brushless DC motors,switched reluctance motors, etc.), AC motors (such as motors withsliding rotors, synchronous electrical motors, asynchronous electricalmotors, induction motors, etc.), universal motors, stepper motors,piezoelectric motors, as well as any other kinds of motors known in theart.

Tensile member 120 may be configured to pass through various differentlace receiving members 125 in lacing region 130. In some cases, lacereceiving members 125 may provide a similar function to traditionaleyelets on uppers. In particular, as tensile member 120 is pulled ortensioned, throat opening 140 may generally constrict so that upper 110is tightened around a foot.

Tensile member 120 may comprise any type of type of lacing materialknown in the art. Examples of lace that may be used include cables orfibers having a low modulus of elasticity as well as a high tensilestrength. A lace may comprise a single strand of material, or cancomprise multiple strands of material. An exemplary material for thelace is SPECTRA™, manufactured by Honeywell of Morris Township NJ,although other kinds of extended chain, high modulus polyethylene fibermaterials can also be used as a lace. Still further exemplary propertiesof a lace can be found in the Reel Based Lacing Application mentionedabove. The term “tensile member,” as used throughout this detaileddescription and in the claims, refers to any component that has agenerally elongated shape and high tensile strength. In some cases, atensile member could also have a generally low elasticity. Examples ofdifferent tensile members include, but are not limited to: laces,cables, straps and cords. In some cases, tensile members may be used tofasten and/or tighten an article footwear.

In some embodiments, tensile member 120 may be provided in sections. Forexample, tensile member 120 may include a first tensile member portion170. In addition, tensile member 120 may include a second tensile memberportion 175. Also, tensile member 120 may include a third tensile memberportion 176. Third tensile member portion 176 may be laced into footwear105 through lace receiving members 125. First tensile member portion 170and second tensile member portion 175 may be releasably fastened tothird tensile member portion 176. For example, in some embodiments,tensile member 120 may include one or more quick release couplings 180,by which first tensile member portion 170, second tensile member portion175, and third tensile member portion 176 may be releasably joined.Without first tensile member portion 170 and second tensile memberportion 175 attached, third tensile member portion 176 may be used as,or be replaced by, a manual (i.e., traditional) shoelace.

Couplings 180 may be readily decoupled manually, in order to enableremoval of tensile member 120 from the article of footwear. Such manualdecoupling may facilitate removal of the motorized tensioning systemfrom footwear 105. This manual release mechanism may also enable thetension in the tensile member to be released in the event of amalfunction or low battery power. Exemplary manual release mechanismsmay include any suitable connector types. In some embodiments, threadedconnections may be utilized. In other embodiments the tensile membercould utilize any other fastening provisions including a snap fitconnector, a hook and receiver type connector, or any other kinds ofmanual fasteners known in the art.

In some embodiments, tensile member 120 may be passed through lacereceiving members 125 and may pass through internal channels withinupper 110, between lacing region and tightening device 150, as shown inFIG. 1. In some embodiments, the internal channels may extend around thesides of upper 110 and guide tensile member 120 towards motorizedtightening device 150, which may be mounted on a heel portion of upper110, as shown in FIG. 1. In some cases, motorized tightening device 150may include provisions for receiving portions of tensile member 120. Forexample, in some cases, end portions of tensile member 120 may passthrough apertures in a housing unit of motorized tightening device 150.

As further shown in FIG. 1, tensioning system 145 may also include acontrol unit 155 configured to control the operation of tighteningdevice 150. In some embodiments, control unit 155 may be attached to theouter surface of footwear, such as outer surface 111 of upper 110.Control unit 155 may include various circuitry components. In addition,control unit 155 may include a processor, configured to controlmotorized tightening device 150.

Control unit 155 shown in FIG. 1 is only intended as a schematicrepresentation of one or more control technologies that could be usedwith tightening device 150. For example, there are various approaches tomotor control that may be employed to allow speed and direction control.For some embodiments, a microcontroller unit may be used. Themicrocontroller may use internal interrupt generated timing pulses tocreate pulse-width modulation (PWM) output. This PWM output is fed to anH-bridge which allows high current PWM pulses to drive the motor bothclockwise and counterclockwise with speed control. However, any othermethods of motor control known in the art could also be used.

Tensioning system 145 may also include a power source 160 configured tosupply power to motorized tightening device 150. In some embodiments,power source 160 may include one or more batteries. Power source 160shown in FIG. 1 is only intended as a schematic representation of one ormore types of battery technologies that could be used to power motorizedtightening device 150. One possibly battery technology that could beused is a lithium polymer battery. The battery (or batteries) could berechargeable or replaceable units packaged as flat, cylindrical, or coinshaped. In addition, batteries could be single cell or cells in seriesor parallel.

Rechargeable batteries could be recharged in place or removed from anarticle for recharging. In some embodiments, charging circuitry could bebuilt in and on board. In other embodiments, charging circuitry could belocated in a remote charger. In another embodiment, inductive chargingcould be used for charging one or more batteries. For example, acharging antenna could be disposed in a sole structure of an article andthe article could then be placed on a charging mat to recharge thebatteries.

Additional provisions could be incorporated to maximize battery powerand/or otherwise improve use. For example, it is also contemplated thatbatteries could be used in combination with super caps to handle peakcurrent requirements. In other embodiments, energy harvesting techniquescould be incorporated which utilize the weight of the runner and eachstep to generate power for charging a battery.

As shown in FIG. 1, tensioning system 145 may include one or moreelectrical cables 165 extending between components of system 145.Electrical cables 165 may be configured to deliver electrical power, aswell as electronic communication signals, between power source 160,tightening device 150, and control unit 155. In some embodiments, suchelectrical cables may be disposed under at least one layer of upper 110.

In some embodiments, one or more components of tensioning system 145 maybe removable from footwear 105. Providing motorized tensioning system145 as removable from footwear 105 may enable footwear 105 to be usedconventionally. In addition, removability of tensioning system 145 mayenable components of tensioning system 145 to be repaired or replacedindependent of footwear 145. In addition, removability of tensioningsystem 145 enables footwear 145 to be repaired or replaced independentof tensioning system 145.

Provisions for mounting components of tensioning system 145 to outersurface 111 of upper 110 can vary in different embodiments. In somecases, motorized tightening device 150 may be removably attached, sothat motorized tensioning system 145 can be easily removed by a user andmodified (for example, when tensile member 120 must be replaced). Forexample, in some embodiments, components of tensioning system 145 may beremovably attached to footwear 105 with a hook and loop fastenermaterial. In other embodiments, components of tensioning system 145 maybe removably attached to footwear 105 with a tongue and grooveconfiguration. Further, in some embodiments, components of tensioningsystem 145 may be removably attached to footwear 105 with aninterference fit or friction fit. The components of such a friction fitattachment may have any suitable orientation. Alternative types ofremovable connections are also possible including, for example, threadedfasteners, cam-lock fasteners, spring clip type fasteners, and otherremovable connection mechanisms.

As shown in FIG. 1, tightening device 150 may be configured to beremovably attached to a heel portion of footwear 105. For example, asshown in FIG. 1, in some embodiments, tightening device 150 may beremovably attached to outer surface 111 of upper 110 in a rearmostportion of footwear 105. This positioning may facilitate the applicationof tension to tensile members on both a medial side and a lateral sideof footwear 110.

In other embodiments, however, any of these components could be disposedin any other portions of an article, including the upper and/or solestructure. In some cases, some components could be disposed in oneportion of an article and other components could be disposed in another,different, portion. The location of a motorized tightening device canvary from one embodiment to another. The illustrated embodiments show amotorized tightening device disposed on the heel of an upper. However,other embodiments may incorporate a motorized tightening device in anyother location of an article of footwear, including the forefoot andmidfoot portions of an upper. In still other embodiments, a motorizedtightening device could be disposed in a sole structure of an article.The location of a motorized tightening device may be selected accordingto various factors including, but not limited to: size constraints,manufacturing constraints, aesthetic preferences, optimal lacingplacement, ease of removability as well as possibly other factors.

In another embodiment motorized tightening device 150 could be disposedat the heel of an upper, while power source 160 and/or control unit 155could be disposed with a sole structure of footwear 110. For example, inone embodiment the power source and control unit may be disposed undermidfoot region of footwear 105 with a cable connection (or a simpleelectrical contact connection) to motorized tightening device 150, whichmay be disposed in the heel region of footwear 105. In still otherembodiments, a power source and a control unit could be integrated intothe motorized tightening device. For example, in some embodiments, botha battery and a control unit could be disposed within an outer housingof motorized tightening device 150.

Further, in some embodiments, the locations of tightening device 150,control unit 155, and power source 160 may be rearranged. Control unit155 is shown in the left side of footwear 105 in FIG. 1. Power source160 is shown on the right side of footwear 105. The positions of controlunit 155 and power source 160 may be reversed in some embodiments.However, it may be advantageous to locate the thinner component on themedial side of footwear 105. This may enable the tensioning systemcomponents to have a lower profile on the medial side than on thelateral side of footwear 105, which may minimize possible interferencewith footwear 105 on the other foot of the wearer.

In some embodiments, motorized tightening device 150 may be configuredto automatically regulate tension in tensile member 120 for purposes oftightening, loosening, and regulating the fit of upper 110. Embodimentscan incorporate a variety of sensors for providing information to acontrol unit of a motorized tensioning system. In some embodiments anH-bridge mechanism may be used to measure current. The measured currentmay be provided as an input to the control unit. In some cases, apredetermined current may be known to correspond to a certain level oftension in the tensile member. By checking the measured current againstthe predetermined current, a motorized tensioning system may adjust thetension of the tensile member until the predetermined current ismeasured, which indicates the desired tension has been achieved.

With current as a feedback, a variety of digital control strategies canbe used. For instance, proportional control only could be used.Alternatively, PI control could be used or full PID. In cases somecases, simple averaging could be used or other filtering techniquesincluding fuzzy logic and band-pass to reduce noise.

Still other embodiments can include additional types of sensors. In somecases, pressure sensors could be used under the insoles of an article toindicate when the user is standing. A motorized tensioning system can beprogrammed to automatically loosen the tension of the lace when the usermoves from the standing position to a sitting position. Such aconfiguration may be useful for older adults that may require lowtension when sitting to promote blood circulation but high tension forsafety when standing.

Still other embodiments could include additional tension sensingelements. In one embodiment, three point bend indicators could be usedin the lace to more accurately monitor the state of the tensioningsystem, including the lace. In other embodiments, various devices tomeasure deflection such as capacitive or inductive devices could beused. In some other embodiments, strain gauges could be used to measuretension induced strain in one or more components of a tensioning system.

In some embodiments, sensors such as gyroscopes and accelerometers couldbe incorporated into a tensioning system. In some embodiments, anaccelerometer and/or gyroscope could be used to detect sudden momentand/or position information that may be used as feedback for adjustinglace tension. These sensors could also be implemented to control periodsof sleep/awake to extend battery life. In some cases, for example,information from these sensors could be used to reduce tension in asystem when the user is inactive, and increase tension during periods ofgreater activity.

Some embodiments may use memory (for example onboard memory associatedwith a control unit) to store sensed data over time. This data may bestored for later upload and analysis. For example, one embodiment of anarticle of footwear may sense and store tension information over timethat can be later evaluated to look at trends in tightening.

It is also contemplated that some embodiments could incorporate pressuresensors to detect high pressure regions that may develop duringtightening. In some cases, the tension of the lace could beautomatically reduced to avoid such high pressure regions. Additionally,in some cases, a system could prompt a user to alter them to these highpressure regions and suggest ways of avoiding them (by altering use orfit of the article).

It is contemplated that in some embodiments a user could be providedwith feedback through motor pulsing, which generates haptic feedback forthe user in the form of vibrations/sounds. Such provisions couldfacilitate operation of a tensioning system directly, or provide hapticfeedback for other systems in communication with a motorized tighteningdevice.

Various methods of automatically operating a motorized tightening devicein response to various inputs can be used. For example, after initiallytightening a shoe, it is common for the lace tension to quickly declinein the first few minutes of use. Some embodiments of a tensioning systemmay include provisions for readjusting lace tension to the initialtension set by the user. In some embodiments, a control unit may beconfigured to monitor tension in those first minutes to then readjusttension to match original tension.

Components of motorized tensioning system 145 may have any suitableconfigurations. For example, components of motorized tensioning system145 may have any suitable configurations disclosed in Beers, U.S. PatentApplication Publication No. 2014/0082963, published on Mar. 27, 2014,and entitled “Footwear Having Removable Motorized Adjustment System,”the entire disclosure of which is incorporated herein by reference.

Mounting the tensioning system components on the outer surface of theupper prevents these components from taking up space in other parts ofthe shoe, for example, between layers of the upper, or within the solestructure. In some embodiments, removable covers may be attached,covering the individual components of the tensioning system. Thesecovers may enable the inclusion of these components on the footwear tobe celebrated, while concealing their outward appearance. For example,the covers may be formed to have any desired appearance and,accordingly, may be used to conceal the appearance of the tighteningdevice, control unit, and/or power source, for instance. In addition,such covers may protect these components from damage.

As shown in FIG. 1, footwear 105 may include a tightening device cover185 configured to be removably attached to footwear 105 over tighteningdevice 150. In addition, footwear 105 may include a control unit cover195 configured to be removably attached to footwear 105 over controlunit 155, and a power source cover 190 configured to be removablyattached to footwear 105. Tightening device cover 185, power sourcecover 190, and/or control unit cover 195 may be removably attached byany suitable mechanism. For example, as shown in FIG. 1, these coversmay be removably attached to the article of footwear with aninterference fit connection. Alternative removable connections may beused, such as hook and loop fasteners, threaded fasteners, press-fitconnections, snap fit connections, or any other suitable removableconnection.

The tensioning system component covers may have any suitable shape. Forexample, as shown in FIG. 1, tightening device cover 185, power sourcecover 190, and/or control unit cover 195 may have facetedconfigurations. For purposes of this disclosure, the term “faceted”shall refer to the inner and/or outer surface of a cover being formed tohave a plurality of planar surfaces (“facets”) arranged at variousangles to one another like a gem. In contrast a “smoothly contoured”surface will be understood to have no adjacent planar surfaces, butinstead smoothly curved surfaces.

Further, in some embodiments, these covers may have polygonal outeredges. In some embodiments, one or more of these covers may have regularpolygonal shapes. In some embodiments, one or more of these covers mayhave non-regular polygonal shapes. The faceted configurations mayinclude faceted inner surfaces, which define concave contours configuredto receive the tensioning system components.

In some embodiments, one or more of the covers may be transparent orsemi-transparent. For example, in some embodiments, one or more of thecovers may be formed of a colored, translucent material. Colored,translucent covers having faceted configurations may have a gem-likeappearance. Accordingly, utilizing such covers may provide a moreaesthetically appealing configuration than a battery pack or circuitboard, for example. In addition, such covers may also provide protectionto the tensioning system components. The faceted configurations mayprovide the covers with increased strength over certain non-facetedconfigurations.

FIG. 2 is a schematic illustration of an exploded, side perspective viewof footwear 105. FIG. 2 shows concave inner surface 200 of power sourcecover 190. As shown in FIG. 2, power source cover may have a facetedconfiguration. For example, inner surface 200 of power source cover 190may include a first perimeter facet 201, a second perimeter facet 202, athird perimeter facet 203, a fourth perimeter facet 204, and a fifthperimeter facet 205. In addition, inner surface 200 may include a firstinner facet 211, a second inner facet 212, a third inner facet 213, afourth inner facet 214, and a fifth inner facet 215.

As shown in FIG. 2, power source cover 190 may have a generallypentagonal shape. However, other shapes are possible. In addition, insome embodiments, power source cover 190 may be symmetrical. In otherembodiments, power source cover 190 may be asymmetrical. The facetedconfiguration may provide inner surface 200 with a contoured concaveshape configured to receive power source 160.

As shown in FIG. 2, power source cover 190 may be configured to beremovably attached to outer surface 111 of upper 110 of footwear 105. Insome embodiments, power source cover 190 may be removably attached toouter surface 111 by an interference fit connection or a friction fitconnection. For example, in some embodiments, upper 110 may include afirst attachment post 220 and a second attachment post 225. Power sourcecover 190 may include a first post receiving cylinder 230 and a secondpost receiving cylinder 235. First attachment post 220 may be receivedwithin first post receiving cylinder 230 with an interference fit or afriction fit. Similarly, second attachment post 225 may be receivedwithin second post receiving cylinder 235 with an interference fit or afriction fit. Other suitable attachment mechanisms may also be used toremovably attach power source cover 190 to footwear 105.

FIG. 3 is a perspective, assembled view of footwear 105 and power sourcecover 190 shown in FIG. 2. As shown in FIG. 3, power source cover 190may have an outer surface 240, which may also be faceted in someembodiments. For example, as shown in FIG. 3, outer surface 240 mayinclude a first perimeter facet 241, a second perimeter facet 242, athird perimeter facet 243, a fourth perimeter facet 244, and a fifthperimeter facet 245. In addition, outer surface 240 may include a firstinner facet 251, a second inner facet 252, a third inner facet 253, afourth inner facet 254, and a fifth inner facet 255. In someembodiments, the facets on the inner surface and outer surface oftensioning system component covers may correspond to one another.

FIG. 4 is a schematic illustration of an exploded, rear view of footwear105 and tightening device cover 185. As shown in FIG. 4, first tensilemember 170 and second tensile member 175 may enter tightening device 150and may extend under at least one layer of upper 110.

Tightening device cover 185 may include an inner surface 400, which mayhave a first perimeter facet 401, a second perimeter facet 402, a thirdperimeter facet 403, a fourth perimeter facet 404, a fifth perimeterfacet 405, and a sixth perimeter facet 406. In addition, inner surface400 may include a first inner facet 411, a second inner facet 412, athird inner facet 413, a fourth inner facet 414, a fifth inner facet415, and a sixth inner facet 416.

As shown in FIG. 4, tightening device cover 185 may be configured to beremovably attached to outer surface 111 of upper 110 of footwear 105. Insome embodiments, tightening device cover 185 may be removably attachedto outer surface 111 by an interference fit connection or a friction fitconnection. For example, in some embodiments, upper 110 may include afirst attachment post 420 and a second attachment post 425. Tighteningdevice cover 185 may include a first post receiving cylinder 430 and asecond post receiving cylinder 435. First attachment post 420 may bereceived within first post receiving cylinder 430 with an interferencefit or a friction fit. Similarly, second attachment post 425 may bereceived within second post receiving cylinder 435 with an interferencefit or a friction fit. Other suitable attachment mechanisms may also beused to removably attach tightening device cover 185 to footwear 105.

FIG. 4 also includes a partial cross-sectional view of the rearmost healportion of footwear 105, tightening device 150, and tightening devicecover 185. As shown in FIG. 4, first post receiving cylinder 430 mayinclude a first channel 431 configured to receive first attachment post420. As further shown in FIG. 4, first channel 431 may include a firstenlarged portion 432 configured to receive a bulbous portion at the endof first attachment post 432, thus forming an interference fit. Secondpost receiving cylinder 435 may include a second channel 436 configuredto receive second attachment post 425. Further, second post receivingcylinder 435 may include a second enlarged portion 437 configured toreceive a bulbous portion at the end of second attachment post 425 toprovide an interference fit.

The cross-sectional view in FIG. 4 also shows that the faceted innersurface 400 of tightening device cover 185 may define concave contoursconfigured to receive tightening device 150. For example, as shown inFIG. 4, tightening device cover 185 may define a cavity 440 configuredto receive tightening device 150 when tightening device cover 185 isattached to outer surface 111 of upper 110.

FIG. 5 is an assembled view of footwear 105, showing tightening devicecover 185 attached to upper 110. As shown in FIG. 5, tightening devicecover 185 may have a faceted outer surface 500. For example, outersurface 500 may include a first perimeter facet 501, a second perimeterfacet 502, a third perimeter facet 503, a fourth perimeter facet 504, afifth perimeter facet 505, and a sixth perimeter facet 506. In addition,outer surface 500 may include a first inner facet 511, a second innerfacet 512, a third inner facet 513, a fourth inner facet 514, a fifthinner facet 515, and a sixth inner facet 516. Although FIG. 5illustrates tightening device cover 185 as having a substantiallyregular polygonal shape, other, non-regular shapes may also be used.

FIG. 6 is a schematic illustration of a side perspective view offootwear 105 and control unit cover 195. As shown in FIG. 6, controlunit cover 195 may be removably attachable to footwear 105. For example,control unit 155 may include an attachment post 520 and control unitcover 195 may include a post receiving cylinder 525 configured toreceive attachment post 520. This may provide an interference fit orfriction fit connection that is the same or similar to that describedabove with respect to FIG. 4.

The faceted configuration of control unit cover 195 may define a concavecontour configured to receive control unit 155. For example, as shown inFIG. 6, control unit cover 195 may include a faceted inner surface 600.In some embodiments, inner surface 600 may include a first perimeterfacet 601, a second perimeter facet 602, a third perimeter facet 603, afourth perimeter facet 604, and a fifth perimeter facet 605. Inaddition, inner surface 600 may also include a first inner facet 611, asecond inner facet 612, a third inner facet 613, a fourth inner facet614, and a fifth inner facet 615.

FIG. 7 is an assembled view of footwear 105 and control unit cover 195.FIG. 7 also shows tightening device cover 185 attached to upper 110. Asshown in FIG. 7 an outer surface 700 of control unit cover 195 may befaceted. For example, outer surface 700 may include a first perimeterfacet 701, a second perimeter facet 702, a third perimeter facet 703, afourth perimeter facet 704, and a fifth perimeter facet 705. Inaddition, outer surface 700 may include a first inner facet 711, asecond inner facet 712, a third inner facet 713, a fourth inner facet714, and a fifth inner facet 715.

In some embodiments, edges of tensioning system component covers thatcontact the outer surface of the upper may have contours configured tomate with the contours of the upper. For example, in some embodiments,the edges of the covers may have curvatures that correspond with thecurvature of a heel region of the upper of the article of footwear. Byhaving these mating curvatures, a close fit may be provided between thecovers and the outer surface of the upper. This may substantiallyprevent debris from contacting the tensioning system components. Thisclose fit may also substantially prevent apparel, such as pant leg cuffsfrom becoming pinched between the covers and the upper.

FIG. 8 is a top view of footwear 105 with all three of the tensioningsystem component covers attached. As shown in FIG. 8, tightening devicecover 185 may have a first contoured edge 186 that is curved tocorrespond with the curvature at the rearmost portion of the heel regionof upper 110. Similarly, power source cover 190 may include a secondcontoured edge 191. As shown in FIG. 8, second contoured edge 191 may becurved to correspond with the curvature on the right side of the upper.Also, control unit cover 195 may include a third contoured edge 196. Asshown in FIG. 8, third contoured edge 196 may be curved to correspondwith the curvature on the left side of the upper.

In some other embodiments, buttons for tightening, loosening and/orperforming other functions can be located directly on the footwear. Asan example, some embodiments could incorporate one or more buttonslocated on or adjacent to the housing of a motorized tightening device.In still other embodiments, a motorized tightening device maybecontrolled using voice commands. These commands could be transmittedthrough a remote device, or to a device capable of receiving voicecommands that is integrated into the article and in communication withthe motorized tightening device.

In some embodiments, the motorized tightening device may be configuredto be controlled by a remote device. Accordingly, the footwearadjustment system may include a remote device configured to control themotorized tightening device. For example, in some embodiments, theremote device may include a bracelet, wristband, or armband that is wornby a user and specifically designed for communicating with thetensioning system.

In some embodiments, other types of mobile devices, such as mobilephones, may be configured to control the tensioning system. In someembodiments, the remote device may include a mobile phone, such as theiPhone made by Apple, Inc. In other embodiments, any other kinds ofmobile phones could also be used including smartphones. In otherembodiments, any portable electronic devices could be used including,but not limited to: personal digital assistants, digital music players,tablet computers, laptop computers, ultrabook computers as well as anyother kinds of portable electronic devices. In still other embodiments,any other kinds of remote devices could be used including remote devicesspecifically designed for controlling the tensioning system. The type ofremote device could be selected according to software and hardwarerequirements, ease of mobility, manufacturing expenses, as well aspossibly other factors.

FIG. 9 is a schematic illustration of footwear 105 with a motorizedtensioning system and a remote device 900 for controlling the tensioningsystem. In particular, FIG. 9 shows remote device 900 as a mobile phone.It will be understood that remote device 900 may be any suitable devicefor communicating with control unit 155.

In some embodiments, the control unit may be configured to communicatewith the remote device. In some cases, the control unit may beconfigured to receive operating instructions from the remote device.Accordingly, the remote device may be configured to communicateinstructions to the control unit. Therefore, control unit 155 may beconfigured to receive instructions from remote device 900 to applyincreased tension to the tensile member by winding the spool. In somecases, remote device 900 may be capable of receiving information fromcontrol unit 155. For example, remote device 900 could receiveinformation related to the current tension in the tensile member and/orother sensed information. Accordingly, in some embodiments, remotedevice 900 may function as a remote control that may be used by thewearer to operate the tensioning system.

Examples of different communication methods between remote device 900and the tensioning system may include wireless networks such as personalarea networks (e.g., BLUETOOTH®) and local area networks (e.g., Wi-Fi),as well as any kinds of RF based methods known in the art. In someembodiments, infrared light may be used for wireless communication.Although the illustrated embodiments detail a remote device thatcommunicates wirelessly with the motorized tensioning system, in otherembodiments the remote device and tensioning system may be physicallyconnected and communicate through one or more wires.

The disclosed lace adjustment system may be usable to perform a varietyof functions related to the tensioning of the tensile member. Thetensioning system components and the remote device may be configured toperform any of the operative functions described in Beers, U.S. PatentApplication Publication No. 2014/0082963, published on Mar. 27, 2014,and entitled “Footwear Having Removable Motorized Adjustment System,”the entire disclosure of which is incorporated herein by reference.

FIG. 10 is a schematic illustration of an exploded, rear perspectiveview of footwear 105 with an alternative set of covers for thecomponents of the tensioning system. As shown in FIG. 10, a secondtightening device cover 1085 may be removably attached to upper 110 offootwear 105 over tightening device 150. Further, a second power sourcecover 1090 may be removably attached to upper 110 over power source 160.In addition, a second control unit cover 1095 may be configured to beremovably attached to footwear 105 over control unit 155.

As shown in FIG. 1, these second covers may be interchangeable with thefaceted covers described above. As opposed to the faceted configurationsdescribed above, second tightening device cover 1085, second powersource cover 1090, and second control unit cover 1095 may havesubstantially smoothly contoured outer surfaces. The substantiallysmoothly contoured outer surfaces may prevent edges of the covers fromcatching on the wearer's other shoe or on obstacles. For example, duringathletic activities, smoothly contoured covers may be beneficial inpreventing the wearer from catching a cover on the footwear of anopponent. When contact is made with a smoothly contoured cover, thecover may merely glance off, with little or no impedance to the motionof the wearer's foot.

FIG. 11 is a schematic illustration of a rear view and partialcross-sectional view of footwear 105 with the second set of coversattached. As shown in FIG. 11, second tightening device cover 1085,second power source cover 1090, and second control unit cover 1095 mayhave smooth contours. As shown in the partial cross-sectional view inFIG. 11, second tightening device cover 1085 may have an outer surface1110 having a smoothly contoured profile, that is, without facets. Asfurther shown in FIG. 11, second tightening device cover 1085 may havean inner surface 1105 that is concavely contoured to define a cavity1440 configured to receive tightening device 150.

As also shown in FIG. 11, second tightening device cover 1085 may beconfigured to attach to outer surface 111 of upper 110 of footwear 105with the same connection mechanism as the faceted tightening devicecover discussed above. For example, in some embodiments, secondtightening device cover 1085 may include a first post receiving cylinder1430 configured to receive first attachment post 420 and a second postreceiving cylinder 1435 configured to receive second attachment post 425of upper 110 in an interference fit or friction fit connection.

FIG. 12 is a schematic illustration of motorized footwear lacing systemincluding 1200 including interchangeable tensioning system componentcovers. As shown in FIG. 12, system 1200 may include footwear 105, aswell as tightening device cover 185, power source cover 190, and controlunit cover 195. System 1200 may also include a second article offootwear 106 matching with footwear 105 (for example, a right and leftpair). Accordingly, system 1200 may include a second faceted tighteningdevice cover 1285 configured to be attached to footwear 106 over atightening device, a second faceted power source cover 1290 configuredto be attached to footwear 106 over a power source, and a second facetedcontrol unit cover 1295 configured to be attached to footwear 106 over acontrol unit. Thus, system 1200 may include a first set of componentcovers 1210, which may include tightening device cover 185, power sourcecover 190, and control unit cover 195, second faceted tightening devicecover 1285, second faceted power source cover 1290, and second facetedcontrol unit cover 1295.

In some cases the arrangement of the tensioning system components may bemedial/lateral specific. Accordingly, in some cases, the second facetedcovers may be mirror images of their counterpart for the mating shoe.For example, control unit cover 195 and second faceted control unitcover 1295 are illustrated as having mirror images, in order to fit overthe control units of footwear 105 and footwear 106, which are disposedon the medial side of each shoe. In other cases, the covers may havehorizontal and/or vertical symmetry, as shown in FIG. 12.

As shown in FIG. 12, system 1200 may also include a second set oftension system component covers 1215. As shown in FIG. 12, second set ofcovers 1215 may have different external shapes than first set of covers1210. For example, second set of covers 1215 may include secondtightening device cover 1085, second power source cover 1090, and secondcontrol unit cover 1095. In addition, second set of covers 1215 mayfurther include covers for the mating footwear 106, including a secondcontoured second contoured tightening device cover 1385, a secondcontoured power source cover 1390, and a second contoured control unitcover 1395.

First set of covers 1210 may be interchangeable with second set ofcovers 1215. The sets of covers may be attached to the footwear ascomplete sets or as individual covers by mixing and matching facetedcovers with smoothly contoured covers.

As shown in FIG. 12, system 1100 may be a kit of parts. Accordingly, thekit of parts may include a container 1206 configured to contain footwear105 and other components of system 1200. For example, in some cases,container 1206 may be a shoebox. The various components of system 1200may be included in container 1206. For example, footwear 105 may beincluded in container 1206 as indicated by a first arrow 1220. Matingfootwear 106 may also be included, as indicated by a second arrow 1225.First set of covers 1210 may be included, as indicated by a third arrow1230. Further, second set of covers 1215 may be included, as indicatedby a fourth arrow 1235.

FIG. 12 also illustrates a remote device 1205, which may also beincluded in container 1206. Remote device 1205 is illustrated as abracelet or watch. The features of remote device 1205 may be the same orsimilar to the remote devices discussed above.

In some embodiments, a method of changing a lacing system of an articleof footwear may include removing a first tightening device cover fromthe article of footwear and removably attaching a second,interchangeable tightening device cover to the article of footwear overthe tightening device. The covers for the power source and control unitmay be similarly interchanged.

While various embodiments of the invention have been described, thedescription is intended to be exemplary, rather than limiting and itwill be apparent to those of ordinary skill in the art that many moreembodiments and implementations are possible that are within the scopeof the invention. Although many possible combinations of features areshown in the accompanying figures and discussed in this detaileddescription, many other combinations of the disclosed features arepossible. Therefore, it will be understood that any of the featuresshown and/or discussed in the present disclosure may be implementedtogether in any suitable combination. Accordingly, the invention is notto be restricted except in light of the attached claims and theirequivalents. Also, various modifications and changes may be made withinthe scope of the attached claims.

1. An article of footwear, comprising: a motorized tensioning systemincluding a tensile member and a motorized tightening device attached toan outer surface of the article of footwear, the tightening deviceconfigured to apply tension in the tensile member to adjust the size ofan internal void defined by the article of footwear; and a tighteningdevice cover configured to be removably attached to the article offootwear over the tightening device.
 2. The article of footwear of claim1, further including: a control unit and a power source incorporatedinto the motorized tensioning system, the control unit and the powersource being attached to an outer surface of the article of footwear; acontrol unit cover configured to be removably attached to the article offootwear over the control unit; and a power source cover configured tobe removably attached to the article of footwear.
 3. The article offootwear of claim 2, wherein at least one of the tightening devicecover, the control unit cover, and the power source cover is removablyattached to the article of footwear with an interference fit connection.4. The article of footwear of claim 2, wherein at least one of thetightening device, the control unit, and the power source is removablyattached to the article of footwear.
 5. The article of footwear of claim1, wherein at least one of the tightening device, the control unit, andthe power source is attached to a heel portion of the article offootwear.
 6. The article of footwear of claim 1, wherein the tighteningdevice cover includes a faceted inner surface defining concave contoursconfigured to receive the tightening device.
 7. The article of footwearof claim 1, wherein edges of the tightening device cover are contouredto mate with a contoured portion of the outer surface of the article offootwear.
 8. The article of footwear of claim 1, wherein, the tighteningdevice is attached to the heel portion of the article of footwear in arearmost portion of the article of footwear.
 9. The article of footwearof claim 1, wherein, the control unit and the power source are locatedon opposing sides of the article of footwear in a heel region of thearticle of footwear. 10-20. (canceled)
 21. An article of footwear,comprising: an upper configured to receive a foot of a wearer; a solestructure secured to the upper; a motorized tensioning system includinga tensile member and a motorized tightening device attached to an outersurface of the article of footwear, the tightening device configured toapply tension in the tensile member to adjust the size of an internalvoid defined by the article of footwear; and a control unit and a powersource incorporated into the motorized tensioning system, the controlunit and the power source being attached to an outer surface of thearticle of footwear; and a set of component covers configured to beremovably attached to the outer surface of the article of footwear, theset of component covers including a tightening device cover configuredto be removably attached over the tightening device, a control unitcover configured to be removably attached over the control unit, and apower source cover configured to be removably attached over the powersource.
 22. The article of footwear of claim 21, wherein at least one ofthe tightening device cover, the control unit cover, and the powersource cover is removably attached to the article of footwear with aninterference fit connection.
 23. The article of footwear of claim 21,wherein at least one of the tightening device, the control unit, and thepower source is removably attached to the article of footwear.
 24. Thearticle of footwear of claim 21, wherein at least one of the tighteningdevice, the control unit, and the power source is attached to a heelportion of the article of footwear.
 25. The article of footwear of claim21, wherein the tightening device cover includes a faceted inner surfacedefining concave contours configured to receive the tightening device.26. The article of footwear of claim 25, wherein edges of the tighteningdevice cover are contoured to mate with a contoured portion of the outersurface of the article of footwear.
 27. The article of footwear of claim21, wherein the control unit cover includes a faceted inner surfacedefining concave contours configured to receive the control unit. 28.The article of footwear of claim 21, wherein the power source coverincludes a faceted inner surface defining concave contours configured toreceive the power source.
 29. The article of footwear of claim 21,wherein, the control unit and the power source are located on opposingsides of the article of footwear in a heel region of the article offootwear.
 30. The article of footwear of claim 21, wherein the motorizedtightening device is configured to be controlled by a remote device. 31.A footwear system, comprising: the article of footwear of claim 30, anda remote device configured to control the motorized tightening device;wherein the remote device includes a bracelet.